oj.uz

Submission #335546

# Submission time Handle Problem Language Result Execution time Memory
335546 2020-12-13T03:46:01 Z luciocf Bootfall (IZhO17_bootfall) C++14
100 / 100
 272 ms 17260 KB 
#include <bits/stdc++.h>

using namespace std;

const int maxn = 510;
const int maxs = 250010;

int a[maxn];
int s;

bitset<maxs> aux, bs[maxn];

void solve(int l, int r)
{
	if (l > r) return;

	int mid = (l+r)>>1;

	bitset<maxs> ant = aux;

	for (int i = l; i <= mid; i++)
		aux |= (aux<<a[i]);

	solve(mid+1, r);

	aux = ant;

	for (int i = r; i >= mid; i--)
		aux |= (aux<<a[i]);

	solve(l, mid-1);

	aux = ant;
	s -= a[mid];

	for (int i = l; i < mid; i++)
		aux |= (aux<<a[i]);

	for (int i = r; i > mid; i--)
		aux |= (aux<<a[i]);

	for (int i = (s+1)/2; i < maxs; i++)
		if (aux[i])
			bs[mid][2*i-s] = 1; 

	aux = ant;
	s += a[mid];
}

int main(void)
{
	int n;
	scanf("%d", &n);

	for (int i = 1; i <= n; i++)
	{
		scanf("%d", &a[i]);
		s += a[i];
	}

	aux[0] = 1;

	for (int i = 1; i <= n; i++)
		aux |= (aux<<a[i]);

	if (s&1 || !aux[s/2])
	{
		printf("0\n");
		return 0;
	}

	aux.reset();
	aux[0] = 1;
	solve(1, n);

	bitset<maxs> ans;

	for (int i = 1; i < maxs; i++)
		ans[i] = 1;

	for (int i = 1; i <= n; i++)
		ans &= bs[i];

	int tot = 0;
	for (int i = 1; i < maxs; i++)
		if (ans[i])
			++tot;

	printf("%d\n", tot);
	for (int i = 1; i < maxs; i++)
		if (ans[i])
			printf("%d ", i);
	printf("\n");
}

Compilation message

bootfall.cpp: In function 'int main()':
bootfall.cpp:53:7: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   53 |  scanf("%d", &n);
      |  ~~~~~^~~~~~~~~~
bootfall.cpp:57:8: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   57 |   scanf("%d", &a[i]);
      |   ~~~~~^~~~~~~~~~~~~

Subtask #1
6.0 / 6.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 876 KB Output is correct
2 Correct 4 ms 748 KB Output is correct
3 Correct 1 ms 364 KB Output is correct
4 Correct 3 ms 748 KB Output is correct
5 Correct 9 ms 876 KB Output is correct
6 Correct 5 ms 876 KB Output is correct
7 Correct 5 ms 748 KB Output is correct
8 Correct 8 ms 876 KB Output is correct
9 Correct 7 ms 1004 KB Output is correct

Subtask #2
7.0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 876 KB Output is correct
2 Correct 4 ms 748 KB Output is correct
3 Correct 1 ms 364 KB Output is correct
4 Correct 3 ms 748 KB Output is correct
5 Correct 9 ms 876 KB Output is correct
6 Correct 5 ms 876 KB Output is correct
7 Correct 5 ms 748 KB Output is correct
8 Correct 8 ms 876 KB Output is correct
9 Correct 7 ms 1004 KB Output is correct
10 Correct 16 ms 1004 KB Output is correct
11 Correct 16 ms 1004 KB Output is correct
12 Correct 17 ms 1004 KB Output is correct
13 Correct 14 ms 1004 KB Output is correct
14 Correct 15 ms 1004 KB Output is correct
15 Correct 19 ms 1004 KB Output is correct
16 Correct 16 ms 1004 KB Output is correct
17 Correct 10 ms 1004 KB Output is correct
18 Correct 17 ms 1004 KB Output is correct
19 Correct 16 ms 1132 KB Output is correct
20 Correct 17 ms 1004 KB Output is correct

Subtask #3
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 876 KB Output is correct
2 Correct 4 ms 748 KB Output is correct
3 Correct 1 ms 364 KB Output is correct
4 Correct 3 ms 748 KB Output is correct
5 Correct 9 ms 876 KB Output is correct
6 Correct 5 ms 876 KB Output is correct
7 Correct 5 ms 748 KB Output is correct
8 Correct 8 ms 876 KB Output is correct
9 Correct 7 ms 1004 KB Output is correct
10 Correct 16 ms 1004 KB Output is correct
11 Correct 16 ms 1004 KB Output is correct
12 Correct 17 ms 1004 KB Output is correct
13 Correct 14 ms 1004 KB Output is correct
14 Correct 15 ms 1004 KB Output is correct
15 Correct 19 ms 1004 KB Output is correct
16 Correct 16 ms 1004 KB Output is correct
17 Correct 10 ms 1004 KB Output is correct
18 Correct 17 ms 1004 KB Output is correct
19 Correct 16 ms 1132 KB Output is correct
20 Correct 17 ms 1004 KB Output is correct
21 Correct 34 ms 1388 KB Output is correct
22 Correct 39 ms 1516 KB Output is correct
23 Correct 26 ms 1132 KB Output is correct
24 Correct 55 ms 1664 KB Output is correct
25 Correct 54 ms 1516 KB Output is correct
26 Correct 52 ms 1536 KB Output is correct
27 Correct 52 ms 1516 KB Output is correct
28 Correct 52 ms 1516 KB Output is correct
29 Correct 59 ms 1644 KB Output is correct
30 Correct 53 ms 1644 KB Output is correct
31 Correct 53 ms 1516 KB Output is correct
32 Correct 53 ms 1516 KB Output is correct
33 Correct 52 ms 1644 KB Output is correct
34 Correct 60 ms 1644 KB Output is correct
35 Correct 52 ms 1600 KB Output is correct
36 Correct 54 ms 1540 KB Output is correct

Subtask #4
16.0 / 16.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 876 KB Output is correct
2 Correct 4 ms 748 KB Output is correct
3 Correct 1 ms 364 KB Output is correct
4 Correct 3 ms 748 KB Output is correct
5 Correct 9 ms 876 KB Output is correct
6 Correct 5 ms 876 KB Output is correct
7 Correct 5 ms 748 KB Output is correct
8 Correct 8 ms 876 KB Output is correct
9 Correct 7 ms 1004 KB Output is correct
10 Correct 16 ms 1004 KB Output is correct
11 Correct 16 ms 1004 KB Output is correct
12 Correct 17 ms 1004 KB Output is correct
13 Correct 14 ms 1004 KB Output is correct
14 Correct 15 ms 1004 KB Output is correct
15 Correct 19 ms 1004 KB Output is correct
16 Correct 16 ms 1004 KB Output is correct
17 Correct 10 ms 1004 KB Output is correct
18 Correct 17 ms 1004 KB Output is correct
19 Correct 16 ms 1132 KB Output is correct
20 Correct 17 ms 1004 KB Output is correct
21 Correct 34 ms 1388 KB Output is correct
22 Correct 39 ms 1516 KB Output is correct
23 Correct 26 ms 1132 KB Output is correct
24 Correct 55 ms 1664 KB Output is correct
25 Correct 54 ms 1516 KB Output is correct
26 Correct 52 ms 1536 KB Output is correct
27 Correct 52 ms 1516 KB Output is correct
28 Correct 52 ms 1516 KB Output is correct
29 Correct 59 ms 1644 KB Output is correct
30 Correct 53 ms 1644 KB Output is correct
31 Correct 53 ms 1516 KB Output is correct
32 Correct 53 ms 1516 KB Output is correct
33 Correct 52 ms 1644 KB Output is correct
34 Correct 60 ms 1644 KB Output is correct
35 Correct 52 ms 1600 KB Output is correct
36 Correct 54 ms 1540 KB Output is correct
37 Correct 116 ms 2540 KB Output is correct
38 Correct 109 ms 2540 KB Output is correct
39 Correct 124 ms 4076 KB Output is correct
40 Correct 149 ms 3436 KB Output is correct
41 Correct 131 ms 4784 KB Output is correct
42 Correct 134 ms 3180 KB Output is correct
43 Correct 157 ms 3948 KB Output is correct
44 Correct 133 ms 4120 KB Output is correct
45 Correct 135 ms 4116 KB Output is correct
46 Correct 141 ms 3308 KB Output is correct
47 Correct 139 ms 3180 KB Output is correct
48 Correct 133 ms 4076 KB Output is correct
49 Correct 130 ms 4076 KB Output is correct
50 Correct 138 ms 3308 KB Output is correct
51 Correct 3 ms 364 KB Output is correct
52 Correct 144 ms 4800 KB Output is correct

Subtask #5
21.0 / 21.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 876 KB Output is correct
2 Correct 4 ms 748 KB Output is correct
3 Correct 1 ms 364 KB Output is correct
4 Correct 3 ms 748 KB Output is correct
5 Correct 9 ms 876 KB Output is correct
6 Correct 5 ms 876 KB Output is correct
7 Correct 5 ms 748 KB Output is correct
8 Correct 8 ms 876 KB Output is correct
9 Correct 7 ms 1004 KB Output is correct
10 Correct 16 ms 1004 KB Output is correct
11 Correct 16 ms 1004 KB Output is correct
12 Correct 17 ms 1004 KB Output is correct
13 Correct 14 ms 1004 KB Output is correct
14 Correct 15 ms 1004 KB Output is correct
15 Correct 19 ms 1004 KB Output is correct
16 Correct 16 ms 1004 KB Output is correct
17 Correct 10 ms 1004 KB Output is correct
18 Correct 17 ms 1004 KB Output is correct
19 Correct 16 ms 1132 KB Output is correct
20 Correct 17 ms 1004 KB Output is correct
21 Correct 34 ms 1388 KB Output is correct
22 Correct 39 ms 1516 KB Output is correct
23 Correct 26 ms 1132 KB Output is correct
24 Correct 55 ms 1664 KB Output is correct
25 Correct 54 ms 1516 KB Output is correct
26 Correct 52 ms 1536 KB Output is correct
27 Correct 52 ms 1516 KB Output is correct
28 Correct 52 ms 1516 KB Output is correct
29 Correct 59 ms 1644 KB Output is correct
30 Correct 53 ms 1644 KB Output is correct
31 Correct 53 ms 1516 KB Output is correct
32 Correct 53 ms 1516 KB Output is correct
33 Correct 52 ms 1644 KB Output is correct
34 Correct 60 ms 1644 KB Output is correct
35 Correct 52 ms 1600 KB Output is correct
36 Correct 54 ms 1540 KB Output is correct
37 Correct 116 ms 2540 KB Output is correct
38 Correct 109 ms 2540 KB Output is correct
39 Correct 124 ms 4076 KB Output is correct
40 Correct 149 ms 3436 KB Output is correct
41 Correct 131 ms 4784 KB Output is correct
42 Correct 134 ms 3180 KB Output is correct
43 Correct 157 ms 3948 KB Output is correct
44 Correct 133 ms 4120 KB Output is correct
45 Correct 135 ms 4116 KB Output is correct
46 Correct 141 ms 3308 KB Output is correct
47 Correct 139 ms 3180 KB Output is correct
48 Correct 133 ms 4076 KB Output is correct
49 Correct 130 ms 4076 KB Output is correct
50 Correct 138 ms 3308 KB Output is correct
51 Correct 3 ms 364 KB Output is correct
52 Correct 144 ms 4800 KB Output is correct
53 Correct 168 ms 4292 KB Output is correct
54 Correct 192 ms 5228 KB Output is correct
55 Correct 189 ms 7704 KB Output is correct
56 Correct 167 ms 4716 KB Output is correct
57 Correct 235 ms 7956 KB Output is correct
58 Correct 193 ms 5484 KB Output is correct
59 Correct 195 ms 6252 KB Output is correct
60 Correct 4 ms 364 KB Output is correct
61 Correct 189 ms 6508 KB Output is correct
62 Correct 173 ms 6508 KB Output is correct
63 Correct 173 ms 6892 KB Output is correct
64 Correct 172 ms 6764 KB Output is correct
65 Correct 165 ms 4332 KB Output is correct
66 Correct 158 ms 4588 KB Output is correct

Subtask #6
35.0 / 35.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 876 KB Output is correct
2 Correct 4 ms 748 KB Output is correct
3 Correct 1 ms 364 KB Output is correct
4 Correct 3 ms 748 KB Output is correct
5 Correct 9 ms 876 KB Output is correct
6 Correct 5 ms 876 KB Output is correct
7 Correct 5 ms 748 KB Output is correct
8 Correct 8 ms 876 KB Output is correct
9 Correct 7 ms 1004 KB Output is correct
10 Correct 16 ms 1004 KB Output is correct
11 Correct 16 ms 1004 KB Output is correct
12 Correct 17 ms 1004 KB Output is correct
13 Correct 14 ms 1004 KB Output is correct
14 Correct 15 ms 1004 KB Output is correct
15 Correct 19 ms 1004 KB Output is correct
16 Correct 16 ms 1004 KB Output is correct
17 Correct 10 ms 1004 KB Output is correct
18 Correct 17 ms 1004 KB Output is correct
19 Correct 16 ms 1132 KB Output is correct
20 Correct 17 ms 1004 KB Output is correct
21 Correct 34 ms 1388 KB Output is correct
22 Correct 39 ms 1516 KB Output is correct
23 Correct 26 ms 1132 KB Output is correct
24 Correct 55 ms 1664 KB Output is correct
25 Correct 54 ms 1516 KB Output is correct
26 Correct 52 ms 1536 KB Output is correct
27 Correct 52 ms 1516 KB Output is correct
28 Correct 52 ms 1516 KB Output is correct
29 Correct 59 ms 1644 KB Output is correct
30 Correct 53 ms 1644 KB Output is correct
31 Correct 53 ms 1516 KB Output is correct
32 Correct 53 ms 1516 KB Output is correct
33 Correct 52 ms 1644 KB Output is correct
34 Correct 60 ms 1644 KB Output is correct
35 Correct 52 ms 1600 KB Output is correct
36 Correct 54 ms 1540 KB Output is correct
37 Correct 116 ms 2540 KB Output is correct
38 Correct 109 ms 2540 KB Output is correct
39 Correct 124 ms 4076 KB Output is correct
40 Correct 149 ms 3436 KB Output is correct
41 Correct 131 ms 4784 KB Output is correct
42 Correct 134 ms 3180 KB Output is correct
43 Correct 157 ms 3948 KB Output is correct
44 Correct 133 ms 4120 KB Output is correct
45 Correct 135 ms 4116 KB Output is correct
46 Correct 141 ms 3308 KB Output is correct
47 Correct 139 ms 3180 KB Output is correct
48 Correct 133 ms 4076 KB Output is correct
49 Correct 130 ms 4076 KB Output is correct
50 Correct 138 ms 3308 KB Output is correct
51 Correct 3 ms 364 KB Output is correct
52 Correct 144 ms 4800 KB Output is correct
53 Correct 168 ms 4292 KB Output is correct
54 Correct 192 ms 5228 KB Output is correct
55 Correct 189 ms 7704 KB Output is correct
56 Correct 167 ms 4716 KB Output is correct
57 Correct 235 ms 7956 KB Output is correct
58 Correct 193 ms 5484 KB Output is correct
59 Correct 195 ms 6252 KB Output is correct
60 Correct 4 ms 364 KB Output is correct
61 Correct 189 ms 6508 KB Output is correct
62 Correct 173 ms 6508 KB Output is correct
63 Correct 173 ms 6892 KB Output is correct
64 Correct 172 ms 6764 KB Output is correct
65 Correct 165 ms 4332 KB Output is correct
66 Correct 158 ms 4588 KB Output is correct
67 Correct 218 ms 7020 KB Output is correct
68 Correct 6 ms 364 KB Output is correct
69 Correct 265 ms 16780 KB Output is correct
70 Correct 272 ms 11500 KB Output is correct
71 Correct 272 ms 11244 KB Output is correct
72 Correct 268 ms 10860 KB Output is correct
73 Correct 266 ms 10860 KB Output is correct
74 Correct 269 ms 17132 KB Output is correct
75 Correct 268 ms 14444 KB Output is correct
76 Correct 257 ms 17260 KB Output is correct
77 Correct 266 ms 17260 KB Output is correct